How can I estimate how many chairs can be placed in the seating area of a
convention center meeting room that is 80 feet across at the front, 120
feet across at the rear, and 150 feet from front to back?

I need to find the total square footage of a lot of rectangular lawns.
Do I have to find the area of each lawn and add up all the areas, or
can I just add all the lengths and all the widths and make one area
calculation based on those two totals?

A right triangle with sides 1 and 2 has a hypotenuse equal to the square
root of 5, which is irrational - it carries on to infinity without
recurring - but the side length of a triangle must be finite!

Ravina wants to cut a square cake using straight vertical cuts to make
five pieces of equal volume. If she makes the first cut from the cake's
center to the top left corner, where must she make the other cuts if they
all start from the cake's center?